Research Of Elastomeric Seismic-protection Isolators For Buildings And Use For Normal High-buildings

Architectural rubber bearing is the main features of base isolation, it can extend the natural period of structure, reduce the seismic energy transmission to the upper structure, the response of the upper structure is reduced to non-isolation at12.5%to25%; when an earthquake occurs, the structural deformation focus at isolator isolation layer. Damping effect of a base isolation structure primarily depends on the isolation device--the performance of rubber bearing isolation device. It is very important to research the mechanical properties of rubber bearing and the design requirements of the production and development. Based on this, the main research work of this paper are:First, summarized and review the theory of building base isolation, describes the basic principles of base isolation and the basic structure of the base isolation seismic isolation rubber bearings used in the composition, summed up the construction of seismic isolation rubber bearings basic characteristics, summarized the construction rubber bearing performance test requirements, as research background and theoretical basis of this article.Then, summarize and derivation the factor of rubber bearing construction, compression and shear performance, and to adopt a common architecture rubber bearing structure design and calculation methods were calculated to verify the isolation rubber construction Supports reasonably related parameters.Once again, building a typical product of rubber bearing by calculated and determining, Used different formulations, different curing processes and technology programs to design the conduct, and used different surface treatments trial program were trial. The product was tested trial testing and validation at each time, based on the test results and summary of the calculation method to correct the design method, reached a scientific and complete design method of rubber bearing.Finally, according to the results of an isolation design analysis of a apartment, in accordance with the construction rubber bearing design of the study design and prototype the required isolation of the product engineering,The performance of prototype building seismic isolation rubber can meet its isolation design and stress analysis requirements. The results show that:Use the above design method to trail isolator use in the basis seismic isolation design, the building horizontal damping coefficient between0.27to0.4, the upper level of earthquake and seismic structural measures can reduce by half a degree to be calculation and design, to ensure that the structures in earthquake safety than non-isolated structure, it savings the amount of superstructure steel about3%to4%, it has a significant margin of economy and safety.